I see no reason it wouldn’t. It’s not casting or concentrating on a spell. My question: does it take the damage instead before or after your damage resistance is applied?

My point is that since it’s not using specific D&D terminology, it should just be taken to mean literally any spell targeting only you. Which Dragon’s Breath is, so long as you cast it on yourself.

While mounted on it, you can make any spell you cast that targets only you also target the mount.

It doesn’t say “targets self”. It says “targets only you”.

It’s already a celestial, a fey, or a fiend rhino. Given that, having wings isn’t surprising.

That sounds entirely reasonable. Why the meme?

Edit: Does “targets you only” mean it has to have a target of self, or just that in this casting it is only targeting you? I’m thinking cast Dragon’s Breath on yourself and share it with your steed, and now both of you get a breath weapon.

Relevant Viva La Dirt League

They’re talking about verbal and somatic components. That spell doesn’t have material components.

2013 was in 1988. 2020 was in 1990

Imagine this with no context.